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US20110155116A1 - Steam system, in particular for rack ovens - Google Patents

Steam system, in particular for rack ovens Download PDF

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Publication number
US20110155116A1
US20110155116A1 US12/737,558 US73755809A US2011155116A1 US 20110155116 A1 US20110155116 A1 US 20110155116A1 US 73755809 A US73755809 A US 73755809A US 2011155116 A1 US2011155116 A1 US 2011155116A1
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US
United States
Prior art keywords
baking
baking chamber
oven
steam
exhaust gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US12/737,558
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English (en)
Inventor
Michael Koos
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Miwe Michael Wenz GmbH
Original Assignee
Miwe Michael Wenz GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by Miwe Michael Wenz GmbH filed Critical Miwe Michael Wenz GmbH
Assigned to MIWE MICHAEL WENZ GMBH reassignment MIWE MICHAEL WENZ GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KOOS, MICHAEL
Publication of US20110155116A1 publication Critical patent/US20110155116A1/en
Abandoned legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A21—BAKING; EDIBLE DOUGHS
    • A21B—BAKERS' OVENS; MACHINES OR EQUIPMENT FOR BAKING
    • A21B1/00—Bakers' ovens
    • A21B1/02—Bakers' ovens characterised by the heating arrangements
    • A21B1/24—Ovens heated by media flowing therethrough
    • A21B1/26—Ovens heated by media flowing therethrough by hot air
    • A—HUMAN NECESSITIES
    • A21—BAKING; EDIBLE DOUGHS
    • A21B—BAKERS' OVENS; MACHINES OR EQUIPMENT FOR BAKING
    • A21B3/00—Parts or accessories of ovens
    • A21B3/04—Air-treatment devices for ovens, e.g. regulating humidity

Definitions

  • the invention relates to a baking oven having
  • an oven housing which has a baking chamber for receiving a baking carriage
  • a steam device which is situated in the baking chamber and includes at least one metallic heat storage body and a water supply device.
  • Such a baking oven is, for example, known from DE 10 2006 044 593 A1.
  • the fan is situated above the top wall of the baking chamber. It suctions off the heating medium through this top wall after flowing through the baking chamber and conveys it to a heating register.
  • the air flows from the fan through a horizontal flow channel or a vertical flow channel to the heating register which is situated in the vertical flow channel. After that, the air flows through a steam device 20 having a large number of steam bars situated one above the other.
  • the air which has passed through gaps between steam bars lying one above the other, flows through outflow openings in a side wall of the baking chamber into the baking chamber.
  • This design has proven to be effective and reliable.
  • the positioning of the steam device directly adjacent to the heating register and the burner lying under the heating register provides for a good heat transfer of the heat of the burner onto the steam device.
  • the heating medium (normally heated air) flows through air adjustment plates, which are situated directly in front of the steam bars, and through the steam bars themselves which are situated one above the other at a distance from one another.
  • the gaps between the air adjustment plates are relatively narrow.
  • the width of the gaps is reduced due to deposits in the area of the upper steam bars, the quantity of air flowing through may be less there than in other areas and the heat transfer to baked goods is less effective there. This may cause the baking to be irregular.
  • the steam devices must be regularly serviced and cleaned and replaced, if necessary, in order to reliably avoid such irregular baking results.
  • a baking oven is known from AT 383 471 B in which a steam device is accommodated in the lower area on both sides of the baking chamber.
  • DE 200 03 484 U1 shows an externally heated steam generator which is situated outside of the baking chamber.
  • the object of the invention is to develop a baking oven according to the definition of the species in such a way that the thermal energy is more optimally used by the steam device in the baking chamber.
  • this objective is achieved in that the steam device is adjacent to a steam heater, which is formed by at least one exhaust gas channel, which runs in a wall of the baking chamber and conducts the exhaust gas of a burner out of the oven housing.
  • the steam device is situated outside of the flow path of the heating medium, other measures must be provided for heating the steam device.
  • the steam device and in particular deposits on the steam device no longer have an influence on the flow of the heating medium and consequently on the heat transfer from the heating device of the baking oven to the baked goods in the baking chamber.
  • the steam device is adjacent to a steam heater, which is formed by at least one exhaust gas channel, which conducts the exhaust gas of a burner from the oven housing.
  • the baking oven is preferably heated by an oil burner or gas burner. The greatest share of the heat energy of the burner is transferred to the heating medium in the oven via the heating register.
  • the exhaust gas of the burner still has a considerable temperature when entering the exhaust gas channel.
  • the steam device may be situated on the back wall of the baking oven. Consequently, it is not necessary to change the position of the fan, the heating register and the burner. In contrast to the known prior art, the steam device is merely removed from the side wall, through which the heating medium flows in, and is moved to the back wall.
  • a U-shaped exhaust gas channel may be situated in the back wall of the baking chamber and extend over the largest part of the width of the back wall.
  • the steam bars of the steam device may extend over the width of the U-shaped exhaust gas channel. The exhaust gas in the exhaust gas channel then heats them over their complete extension.
  • a large number of heat storage elements is situated additionally in the area of the side wall delimiting the baking chamber.
  • the heat storage elements are preferably firebricks.
  • Several firebricks preferably extend over the entire width of the side wall of the baking chamber.
  • a gap through which the heating medium passes is provided between firebricks lying one above the other.
  • the firebricks are consequently situated at the location where the steam device was provided in the embodiment of the prior art.
  • the firebricks store heat energy which is transferred to them via the heating medium and this makes it possible to keep the temperature in the baking oven constant.
  • a large-area heat storage element or a plurality of large-area heat storage elements may be situated in the area of the side wall which limits the baking chamber and through which the heating medium flows in.
  • the large-area heat storage element or the large-area heat storage elements have pass-through openings, making it possible for the heating medium to flow through.
  • FIG. 1 shows a front view of a baking oven according to the invention.
  • FIG. 2 shows a cutaway view of the baking oven from FIG. 1 with a view of the back wall.
  • FIG. 3 shows a cutaway top view of the baking oven according to the invention.
  • FIG. 4 shows a cutaway side view of the baking oven from the preceding figures.
  • FIG. 1 shows a baking oven according to the invention which is normally used in bakeries or baked goods factories.
  • the baking oven includes a housing 1 having a door 2 which is closed during the baking operation and may be used for putting in and removing the baked goods.
  • Door 2 is approximately two meters tall and extends to the floor without a threshold. This ensures that it is possible for a baking carriage, also referred to as a rack carriage, to be pushed through the door opening into the baking chamber of the baking oven when door 2 is open.
  • a control panel 3 having a display screen is also visible in FIG. 1 . Control panel 3 may be used to enter parameters of the baking process (for example, duration, temperature, steaming) which are then displayed on the display screen of control panel 3 for the purpose of monitoring.
  • FIG. 2 shows a cutaway view of the baking oven according to the invention, the front side having the door cut away.
  • the cross section of baking chamber 4 and the essential functional elements required for the baking operation are visible.
  • a fan 5 is visible on the upper right in housing 1 of the baking oven. This fan 5 suctions a heating medium, which is normally made up of heated air, out of baking chamber 4 through its top wall 6 .
  • a flow control valve or a slide may be provided in the area of top wall 6 in order to vary the flow cross section for the suctioned heating medium and thus influence the quantity of heat supplied to the baked goods in baking chamber 4 .
  • the heating medium flows through a heating register 7 which is heated by a burner 8 .
  • Burner 8 is normally operated using oil or gas.
  • the air heated in this way then flows into a feed channel 9 which is located on the left in the section of oven housing 1 shown in FIG. 2 .
  • Feed channel 9 extends over the entire height of baking chamber 4 and is adjacent to its left side wall 10 .
  • Elongated firebricks 11 are situated in feed channel 9 directly adjacent to left side wall 10 .
  • the heated heating medium heats them to its temperature. If, for example, the heating medium is cooled by opening the oven door and putting in new baked goods, the heat storage capacity of firebricks 11 ensures that the heating medium rapidly returns to the intended temperature once the oven door has been closed again. Firebricks 11 consequently form heat storage elements for heating the heating medium.
  • Firebricks 11 are distributed at a distance from one another over the height of left side wall 10 of the baking chamber.
  • the gaps between the firebricks define the flow path of the heating medium.
  • Left side wall 10 of baking chamber 4 is made up of a metal plate having perforations which make it possible for the heating medium to enter baking chamber 4 .
  • Heat storage bodies 13 are situated on back wall 12 of baking chamber 4 which is visible in FIG. 2 .
  • Heat storage bodies 13 are formed by elongated, U-shaped steam bars which are open at the top.
  • a water supply device (not shown) makes it possible to supply water to steam bars 13 .
  • a plume of steam is thus generated in the known manner in baking chamber 4 and has a positive influence on the baking result.
  • Steam bars 13 are located on the back wall of baking chamber 4 and accordingly outside of the flow path of the heating medium which flows from left side wall 10 of baking chamber 4 to the upper right side of top wall 6 of the baking chamber. Consequently, deposits or other changes on steam bars 13 are unable to influence the flow of the heating medium through baking chamber 4 .
  • exhaust gas channel 14 has a flat rectangular cross section and is U-shaped.
  • exhaust gas channel 14 is made up of two channel halves 15 , 16 which lie adjacent to one another, are separated from one another and are connected to one another in the lower area of back wall 12 by a U-shaped channel deflection.
  • the exhaust gas of burner 8 flows through an exhaust gas pipe into channel halves 15 which are on the left in FIGS. 2 and 3 .
  • channel half 15 the exhaust gas flows downward to the U-shaped deflection and then upwards through right channel half 16 .
  • the exhaust gas may either be driven through exhaust gas channel 14 by the overpressure caused by the combustion or it may also be suctioned off.
  • An energy recovery unit having a fan which suctions off the exhaust gas from exhaust gas channel 14 by a slight underpressure may be provided in the second case.
  • Exhaust gas channel 14 to which steam bars 13 are fastened, has two advantages in particular. On the one hand, steam bars 13 are brought to the required operating temperature. On the other hand, the exhaust gas within oven housing 1 is cooled down again and exits at a reduced temperature. This increases the thermal efficiency of the baking oven.
  • FIG. 4 Ramp 17 , which makes it possible for a baking carriage to be rolled into baking chamber 4 , is visible in FIG. 4 .
  • FIGS. 2 and 3 show a turntable 18 onto which a baking carriage may be pushed so that it may be rotated during the baking operation.
  • Turntable 18 has a diameter exceeding 1 meter.
  • the baking carriage may also be rotated without turntable 18 using other means.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Baking, Grill, Roasting (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Drying Of Solid Materials (AREA)
US12/737,558 2008-07-29 2009-07-24 Steam system, in particular for rack ovens Abandoned US20110155116A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102008035394.9 2008-07-29
DE102008035394A DE102008035394B3 (de) 2008-07-29 2008-07-29 Schwadenapparat, insbesondere für Stikkenofen
PCT/EP2009/059590 WO2010012663A2 (de) 2008-07-29 2009-07-24 Schwadenapparat, insbesondere für stikkenofen

Publications (1)

Publication Number Publication Date
US20110155116A1 true US20110155116A1 (en) 2011-06-30

Family

ID=41610778

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/737,558 Abandoned US20110155116A1 (en) 2008-07-29 2009-07-24 Steam system, in particular for rack ovens

Country Status (6)

Country Link
US (1) US20110155116A1 (de)
EP (1) EP2312953B1 (de)
DE (1) DE102008035394B3 (de)
RU (1) RU2477049C2 (de)
WO (1) WO2010012663A2 (de)
ZA (1) ZA201100201B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105230690A (zh) * 2015-10-27 2016-01-13 佛山市顺德区奥利焙食品机械有限公司 一种蓄热式蒸汽发生器
US20170245683A1 (en) * 2014-10-23 2017-08-31 Koninklijke Philips N.V. Apparatus and method for preparing food
CN111887739A (zh) * 2020-08-14 2020-11-06 上海海鳌实业有限公司 一种用于隔水烤蛋糕的平板烤炉及装置
CN117441748A (zh) * 2023-11-08 2024-01-26 淮安特创科技有限公司 一种高温隧道炉蒸汽辅助加热节能装置

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102415418B (zh) * 2011-12-08 2015-01-14 宣威市浦记火腿食品有限公司 肉食烘烤房
DE202012101553U1 (de) 2012-04-25 2012-05-30 Miwe Michael Wenz Gmbh Backofen mit Brenner
DE102012220812B4 (de) 2012-11-14 2017-09-28 Miwe Michael Wenz Gmbh Wasserzufuhr für Dampferzeuger
DE102014005379A1 (de) 2013-04-16 2014-10-30 Labetherm Limited Zweigniederlassung Deutschland Heißluftgerät mit Verdampfer und Wärmespeicher
DE102016117403B4 (de) 2016-09-15 2019-11-14 Miwe Michael Wenz Gmbh Beschwadungsverfahren und -vorrichtung
DE102018216931A1 (de) * 2018-10-02 2020-04-02 BSH Hausgeräte GmbH Verfahren zum Betreiben eines Haushalts-Dampfbehandlungsgeräts sowie Haushalts-Dampfbehandlungsgerät
DE102019212448B3 (de) * 2019-08-20 2020-09-03 Wachtel GmbH Schwadenrückgewinnung in backöfen
DE102021133279A1 (de) 2021-12-15 2023-06-15 Verein zur Förderung des Technologietransfers an der Hochschule Bremerhaven e.V. Vorrichtung zum thermischen Zubereiten von Lebensmitteln und Verfahren zum thermischen Zubereiten von Lebensmitteln unter Verwendung der Vorrichtung

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4779604A (en) * 1984-08-08 1988-10-25 Koenig Helmut Baking oven
US4984557A (en) * 1986-04-18 1991-01-15 Koenig Helmut Baking oven
US5014679A (en) * 1989-09-18 1991-05-14 Tecogen, Inc. Gas fired combination convection-steam oven
US5653164A (en) * 1994-01-03 1997-08-05 Premark Feg L.L.C. Steam generator for convection oven
RU2086131C1 (ru) * 1993-07-21 1997-08-10 Сергей Александрович Побегалов Пекарная печь
KR20010107442A (ko) * 2000-05-29 2001-12-07 김상남 바베큐용 브라운가스 오븐
US6909069B2 (en) * 2001-10-01 2005-06-21 Miwe Michael Wenz Gmbh Baking oven
US20090321411A1 (en) * 2006-09-19 2009-12-31 Michael Koos Baking oven

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU449699A1 (ru) * 1972-12-11 1974-11-15 Всесоюзный научно-исследовательский институт хлебопекарной промышленности Пароувлажнительное устройство к хлебопекарным печам
DE3208223A1 (de) * 1982-03-06 1983-09-08 Franz Daub u. Söhne (GmbH u.Co), 2000 Hamburg Verfahren zum beheizen des backraums eines backofens sowie backofen zur durchfuehrung dieses verfahrens
IT248016Y1 (it) * 1999-03-17 2002-12-09 Electrolux Zanussi Grandi Impi Forno di cottura con generatore di vapore riscaldato a gas
RU2162636C1 (ru) * 2000-06-28 2001-02-10 Акционерное общество открытого типа "Торгмаш" Хлебопекарная печь
US6860261B2 (en) * 2001-10-25 2005-03-01 Robert S. Hines, Jr. Baking oven construction
US6880544B2 (en) * 2002-12-10 2005-04-19 Lang Manufacturing Company Rack oven

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4779604A (en) * 1984-08-08 1988-10-25 Koenig Helmut Baking oven
US4984557A (en) * 1986-04-18 1991-01-15 Koenig Helmut Baking oven
US5014679A (en) * 1989-09-18 1991-05-14 Tecogen, Inc. Gas fired combination convection-steam oven
RU2086131C1 (ru) * 1993-07-21 1997-08-10 Сергей Александрович Побегалов Пекарная печь
US5653164A (en) * 1994-01-03 1997-08-05 Premark Feg L.L.C. Steam generator for convection oven
KR20010107442A (ko) * 2000-05-29 2001-12-07 김상남 바베큐용 브라운가스 오븐
US6909069B2 (en) * 2001-10-01 2005-06-21 Miwe Michael Wenz Gmbh Baking oven
US20090321411A1 (en) * 2006-09-19 2009-12-31 Michael Koos Baking oven

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170245683A1 (en) * 2014-10-23 2017-08-31 Koninklijke Philips N.V. Apparatus and method for preparing food
US11116359B2 (en) * 2014-10-23 2021-09-14 Koninklijke Philips N.V. Apparatus and method for preparing food
CN105230690A (zh) * 2015-10-27 2016-01-13 佛山市顺德区奥利焙食品机械有限公司 一种蓄热式蒸汽发生器
CN111887739A (zh) * 2020-08-14 2020-11-06 上海海鳌实业有限公司 一种用于隔水烤蛋糕的平板烤炉及装置
CN117441748A (zh) * 2023-11-08 2024-01-26 淮安特创科技有限公司 一种高温隧道炉蒸汽辅助加热节能装置

Also Published As

Publication number Publication date
EP2312953A2 (de) 2011-04-27
DE102008035394B3 (de) 2010-06-10
WO2010012663A2 (de) 2010-02-04
EP2312953B1 (de) 2014-12-03
WO2010012663A3 (de) 2010-07-01
ZA201100201B (en) 2011-09-28
RU2477049C2 (ru) 2013-03-10
RU2011107302A (ru) 2012-09-10

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